OMRON ZN-CTX / CTM catalog

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Catalog Name	Catalog Number [size]	Last Update
ZN-CTX21/CTM/KMX21 Catalog	E419-E1-01 [7160KB]	Jun 01, 201820180601	ZN-CTX21/CTM/KMX21 Catalog

OMRON ZN-CTX / CTM specification

last update: December 01, 2016

Rating and performance

Logging unit (rating)

Model	ZN-CTX21-A
Connectable sensor	ZN-CTM[]1-[]A
Display	7-seg. 5-digit 2-step LCD display, auxiliary information indicator displays
Recording Interval	1 s, 2 s, 5 s, 10 s, 20 s, 30 s, 1 min. *1
Operation Function *2	Momentary power, Integrated power consumption
Measurement Mode	Normal mode, Sleep mode *3, High-speed logging mode
Recording Mode	Continue mode *4, Ring mode *5
External Output	Alarm output (Photocoupler output) *6
Memory Capacity (Internal)	Internal memory: approx. 6500 data items
Memory Capacity (External)	SD card with SDHC compatibility *7 (Save measured values and converted values; save and read setting values)
Power Supply	DC input: 24 VDC ± 10%; Batteries: Two AAA batteries *8
Current Consumption	80 mA max.
Battery Life *9	Approx. 1 week *10
Operating Temperature	Battery Supply: -10°C to +60°C (no condensation or icing)
Operating Humidity	20% to 85% (no condensation or icing)
Storage Humidity/Temperature	-15°C to +60°C, 20% to 85% (no condensation or icing)
Insulation Resistance	20 MΩ (500 VDC)
Withstand Voltage	1000 VAC, 50/60 Hz, 1 min.: Between the case and current input circuit
Vibration Resistance	With mounting screws: 10 to 150 Hz, 0.7 mm double amplitude, acceleration: 50 m/s2 for each in X, Y and Z directions for 80 min. With mounting magnets: 10 to 55 Hz, 0.3 mm double amplitude, acceleration: 20 m/s2 for each in X, Y and Z directions for 50 min.
Shock Resistance	150 m/s2 in 6 directions (+/-X, +/-Y, and +/-Z directions), 3 times each *11
Material	ABS
Degree of Protection	IP30
Mounting	Magnet mounting, screw mounting, hook
Weight (in Package)	Approx. 500 g
Accessories	Instruction Sheet, Startup Guide, Mounting Magnets*12, Alarm Output Connector *13, DC Cable, and Ferrite Core

*1. In high-speed logging mode, data is recorded in 83 ms at 60 Hz and in 100 ms at 50 Hz.
*2. Momentary power and integrated power values are converted from the measured current. Correctly specify the
       number of used channels, applicable measurement target circuit, CT type, frequency, voltage and power factor.
*3. The display turns OFF after 10 seconds of no user operation and recovers by a key operation when SLEEP mode is
       specified. LAN cannot be used when sleep mode is specified.
*4. Automatically writes the data to the SD memory card when the internal memory reaches its capacity and continues
       recording until the SD card memory capacity reaches its limit. The unit stops operation if there is no SD memory
       card inserted when the internal memory reaches its capacity.
       (Recording can be resumed after inserting an SD memory card and outputting the data to it at a press of button.)
*5. Continues the recording of the latest measured values until the internal memory reaches its capacity. (If the internal
       memory capacity exceeds the capacity, data is overwritten from the oldest one in the memory.)
*6. Output when the integrated power upper limit specified in THR mode is exceeded. An alarm output is not available in
       SLEEP mode.
*7. An OMRON HMC-SD291 SD Memory Card or an SDHC Class 4 or higher memory card is recommended.
*8. Nickel-metal hydride cells or alkaline dry cells can be used. Manganese battery cells cannot be used.
*9. Battery life varies depending on the measurement environment, recording interval, operation mode as well as the
       battery type and performance.
*10. Conditions: Two AAA nickel-metal hydride cells; Sleep mode; Continue mode; Recording interval: 1 s; SD memory
         card: HMC-SD291; Operation temperature: 23°C ; and Automatic range selection off
*11. The installation place must be free from physical shock when using mounting magnets.
*12. Already installed on the product by factory default.
*13. OMRON's XW4B-02B1-H1 connector.

Logging unit (rating)

Model	ZN-CTX21-A
Primary side rated current	Dedicated CT (5 A/50 A/100 A/200 A)
Primary side allowable input current	120% of rated current (Continue)
Accuracy	±2.0%FS±1 digit (Ambient temperature 23°C, rated input, rated frequency) *
Measurement target frequency	50 Hz/60 Hz
Recording values	Current value, instantaneous power, integrated power consumption
Applicable circuit	Single phase two-wire, single phase three-wire, three-phase three-wire, three-phase four-wire

* An error of the dedicated CT is not included.

Dedicated CT unit (rating and performance)

Model	ZN- CTM11-5A	ZN- CTM11-50A	ZN- CTM11-100A	ZN- CTM11-200A	ZN- CTM51-200A
Primary side rated current	5 A	50 A	100 A	200 A	200 A
Secondary winding	10 Hz to 5 kHz
Applicable frequency	3,000 turns
Insulation resistance	Between output terminal and case: 50 MΩ minimum (500 VDC megohms)
Withstand voltage	Between output terminal and case: 2,000 VAC 1 minute
Protection element	7.5 V clamp element
Allowable frequency of disconnection	100 times				5,000 times
Applicable wire diameter *	7.9 mm dia. maximum	9.5 mm dia. maximum	14.5 mm dia. maximum	24.0 mm dia. maximum	23.0 mm dia. maximum
Operating temperature and humidity range	-20°C to +60°C 85% maximum (no condensation or icing)
Storage temperature and humidity range	-30°C to +65°C 85% maximum (no condensation or icing)
Voltage of circuit used	480 VAC maximum

* If you use a flat cable, select the cable based on the dimensions of the CT.

last update: December 01, 2016

OMRON ZN-CTX / CTM lineup

last update: June 1, 2018

Logging unit

Appearance	Product name	Model	Power supply
	Logging unit	ZN-CTX21-A	Battery/DC cable

Dedicated CT unit

Branch type

Appearance	Product name	Model
	Branch cable (cable length 1.3 m)	ZN-CTM11-C
	Split type CT Connector: For connecting the branch cable Cable length: 0.2 m	ZN-CTM11-5A
		ZN-CTM11-50A
		ZN-CTM11-100A
		ZN-CTM11-200A
	Clamp type CT Connector: For connecting the branch cable Cable length: 0.2 m	ZN-CTM51-200A

Guideline for selecting dedicated CT unit

Model	Branch cable Model ZN-CTM11-C	CT exclusive for branch type Model ZN-CTM-A (*)
Applicable circuits
Single-phase 2-wire	1	1
Single-phase 3-wire	1	2
Three-phase 3-wire	1	2
Three-phase 4-wire	1	3

(Necessary quantity is indicated in the table)
* Up to three dedicated CTs for branch type are connectable to the branch cable.Be sure, however, not to connect a CT
   of different rated current.Correct measurement will be blocked.

Optional

Appearance	Product name		Model
	Mounting magnet (A set is attached to Model ZN-CTX21 and Model ZN-CTX21-A.)		ZN9-EM01-S
	DC cable (A magnet is attached to Model ZN-CTX21-A and Model ZN-KMX21-A.)	Straight type (2 m)	ZN9-ED01-S
		Right angle type (2 m)	ZN9-ED02-S

Appearance	Product name		Model
	Special Cable (3 m) (One included with the ZN-KMX21 or ZN-KMX21-A.)		ZN9-KMC30
	Special Cable (3 m)	For direct connection to KM-N-series Power Monitor.	ZN9-KMC30-N
	Environmental Visualization Software *1*2 Wave Inspire ES		ZN-SW11-S

*1 Operating environment/OS: Microsoft Windows 7 (32 bit/64 bit)/Microsoft Windows 10 (32 bit/64 bit)
      CPU: Intel convertible processor 1 GHz minimum
      Memory: 1 GB minimum (2 GB or greater is recommended)
*2 Supportable version is Ver. 2.2.1 or later.

last update: June 1, 2018

OMRON ZN-CTX / CTM dimension

last update: December 27, 2013

Tolerance class IT16 applies to the dimensions unless otherwise specified.

ZN-CTX21-A

ZN-CTM11-5A

ZN-CTM11-50A

ZN-CTM11-100A

ZN-CTM11-200A

ZN-CTM51-200A

ZN-CTM11-C

last update: December 27, 2013

• NO. ZN-CTX / CTM
• TYPE:Electric Power Monitoring Equipment Portable Power Monitor Copyright Statement
• DATE:2021-06-16
• Associated products:
  SmartVision MX Vision System/Features KM-N3-FLK Power Monitor/Features